Article Detail Which is the longest wall in world ? Answer: Great wall of China Similar Questions : 1. Which is Longest national highway of India ? Answer: NH-7 ( Varanasi to Kanyakumari - 2,369 km) 2. Which is Highest Battle field ? Answer: Siachin Glacier. Mastguru team Salutes to Indian soldiers. 3. Which is smallest state by area of India ? Answer: Goa 4. Which is the highest dam in India ? Answer: Tehri Dam on Bhagirathi River in Uttarakhand (Height of 260 metres) 5. Which is Highest Award in India ? Answer: Bharat Ratna 6. Which is longest river of India Answer: Ganges 7. Which is longest river in world ? Answer: Nile, Africa Read more from - Longest and Largest